Title:
ADAPTIVE CONTROL METHOD FOR PERIODIC SIGNAL
Document Type and Number:
Japanese Patent JP3568105
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enable flexible adaptation to the variation in transfer characteristics and to improve the adaptation speed by updating the orthogonalization coefficient of a specific frequency component of an adaptable signal generated by adaptable signal generating algorithm with an element of an adaptation coefficient vector.
SOLUTION: The adaptable signal generating algorithm 11 generates an adaptable signal y(n) as a sine function represented by orthogonalization according to (n)=p(n)sin(ωTn)+q(n)cos(ωTn) on the basis of the angular frequency ωthat one specific frequency component in the periodic signal f(n) has at discrete time (n) of an update period T. When the adaptation coefficient vector W(n) is updated, respective elements of the adaptation coefficient vector W(n) are adaptively adjusted corresponding to variation of the amplitude, phase, or the angular frequency ω of the specific frequency component of the periodic signal f(n). With elements p(n) and q(n) of the updated adaptation coefficient vector W(n), orthogonalization coefficients p(n) and q(n) of frequency components of the adaptation signal y(n) generated by the adaptable signal generating algorithm 11 are updated.
Inventors:
Katsuhiro Goto
Application Number:
JP36539598A
Publication Date:
September 22, 2004
Filing Date:
December 22, 1998
Export Citation:
Assignee:
Tokai Rubber Industry Co., Ltd.
International Classes:
G10L21/0208; G05B13/02; G05D19/02; G10L21/0232; H03H21/00; (IPC1-7): G05B13/02; G05D19/02; G10L21/02; H03H21/00
Domestic Patent References:
| JP7334165A | ||||
| JP6274185A | ||||
| JP7133842A | ||||
| JP9319403A |
Attorney, Agent or Firm:
Hiroshi Okawa
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